security/selinux/Kconfig

   1 config SECURITY_SELINUX
   2         bool "NSA SELinux Support"
   3         depends on SECURITY && NET && INET
   4         default n
   5         help
   6           This selects NSA Security-Enhanced Linux (SELinux).
   7           You will also need a policy configuration and a labeled filesystem.
   8           You can obtain the policy compiler (checkpolicy), the utility for
   9           labeling filesystems (setfiles), and an example policy configuration
  10           from <http://www.nsa.gov/selinux/>.
  11           If you are unsure how to answer this question, answer N.
  12
  13 config SECURITY_SELINUX_BOOTPARAM
  14         bool "NSA SELinux boot parameter"
  15         depends on SECURITY_SELINUX
  16         default n
  17         help
  18           This option adds a kernel parameter 'selinux', which allows SELinux
  19           to be disabled at boot.  If this option is selected, SELinux
  20           functionality can be disabled with selinux=0 on the kernel
  21           command line.  The purpose of this option is to allow a single
  22           kernel image to be distributed with SELinux built in, but not
  23           necessarily enabled.
  24
  25           If you are unsure how to answer this question, answer N.
  26
  27 config SECURITY_SELINUX_BOOTPARAM_VALUE
  28         int "NSA SELinux boot parameter default value"
  29         depends on SECURITY_SELINUX_BOOTPARAM
  30         range 0 1
  31         default 1
  32         help
  33           This option sets the default value for the kernel parameter
  34           'selinux', which allows SELinux to be disabled at boot.  If this
  35           option is set to 0 (zero), the SELinux kernel parameter will
  36           default to 0, disabling SELinux at bootup.  If this option is
  37           set to 1 (one), the SELinux kernel parameter will default to 1,
  38           enabling SELinux at bootup.
  39
  40           If you are unsure how to answer this question, answer 1.
  41
  42 config SECURITY_SELINUX_DISABLE
  43         bool "NSA SELinux runtime disable"
  44         depends on SECURITY_SELINUX
  45         default n
  46         help
  47           This option enables writing to a selinuxfs node 'disable', which
  48           allows SELinux to be disabled at runtime prior to the policy load.
  49           SELinux will then remain disabled until the next boot.
  50           This option is similar to the selinux=0 boot parameter, but is to
  51           support runtime disabling of SELinux, e.g. from /sbin/init, for
  52           portability across platforms where boot parameters are difficult
  53           to employ.
  54
  55           If you are unsure how to answer this question, answer N.
  56
  57 config SECURITY_SELINUX_DEVELOP
  58         bool "NSA SELinux Development Support"
  59         depends on SECURITY_SELINUX
  60         default y
  61         help
  62           This enables the development support option of NSA SELinux,
  63           which is useful for experimenting with SELinux and developing
  64           policies.  If unsure, say Y.  With this option enabled, the
  65           kernel will start in permissive mode (log everything, deny nothing)
  66           unless you specify enforcing=1 on the kernel command line.  You
  67           can interactively toggle the kernel between enforcing mode and
  68           permissive mode (if permitted by the policy) via /selinux/enforce.
  69
  70 config SECURITY_SELINUX_AVC_STATS
  71         bool "NSA SELinux AVC Statistics"
  72         depends on SECURITY_SELINUX
  73         default y
  74         help
  75           This option collects access vector cache statistics to
  76           /selinux/avc/cache_stats, which may be monitored via
  77           tools such as avcstat.
  78
  79 config SECURITY_SELINUX_CHECKREQPROT_VALUE
  80         int "NSA SELinux checkreqprot default value"
  81         depends on SECURITY_SELINUX
  82         range 0 1
  83         default 1
  84         help
  85           This option sets the default value for the 'checkreqprot' flag
  86           that determines whether SELinux checks the protection requested
  87           by the application or the protection that will be applied by the
  88           kernel (including any implied execute for read-implies-exec) for
  89           mmap and mprotect calls.  If this option is set to 0 (zero),
  90           SELinux will default to checking the protection that will be applied
  91           by the kernel.  If this option is set to 1 (one), SELinux will
  92           default to checking the protection requested by the application.
  93           The checkreqprot flag may be changed from the default via the
  94           'checkreqprot=' boot parameter.  It may also be changed at runtime
  95           via /selinux/checkreqprot if authorized by policy.
  96
  97           If you are unsure how to answer this question, answer 1.